Cellular Network Data is a data connection from the cellular device to the cell site.  LTE (4G), 3G and 1X are types of cellular network data connections. Data sessions include, but are not limited to, browsing the Internet such as Google, streaming music, videos and movies, sending and receiving emails, sending and receiving MMS messages, hotspot hosting and application use. While connected to the cellular data network, data usage will pull from the current data plan.